[afnog] Weekly Global IPv4 Routing Table Report

Routing Table Analysis Role Account cscora at apnic.net
Fri Oct 21 18:03:11 UTC 2022


This is an automated weekly mailing describing the state of the Global
IPv4 Routing Table as seen from APNIC's router in Japan.

The posting is sent to APOPS, NANOG, AfNOG, SANOG, PacNOG, SAFNOG
TZNOG, MENOG, BJNOG, SDNOG, CMNOG, LACNOG and the RIPE Routing WG.

Daily listings are sent to bgp-stats at lists.apnic.net.

For historical data, please see https://thyme.apnic.net.

If you have any comments please contact Philip Smith <pfsinoz at gmail.com>.

IPv4 Routing Table Report   04:00 +10GMT Sat 22 Oct, 2022

  BGP Table (Global) as seen in Japan.

Report Website:     https://thyme.apnic.net
Detailed Analysis:  https://thyme.apnic.net/current/

Analysis Summary
----------------

BGP routing table entries examined:                              913066
    Prefixes after maximum aggregation (per Origin AS):          344590
    Deaggregation factor:                                          2.65
    Unique aggregates announced (without unneeded subnets):      440326
Total ASes present in the Internet Routing Table:                 73756
    Prefixes per ASN:                                             12.38
Origin-only ASes present in the Internet Routing Table:           63346
Origin ASes announcing only one prefix:                           25997
Transit ASes present in the Internet Routing Table:               10410
Transit-only ASes present in the Internet Routing Table:            406
Average AS path length visible in the Internet Routing Table:       4.3
    Max AS path length visible:                                      55
    Max AS path prepend of ASN (265020)                              50
Prefixes from unregistered ASNs in the Routing Table:              1071
    Number of instances of unregistered ASNs:                      1074
Number of 32-bit ASNs allocated by the RIRs:                      40454
Number of 32-bit ASNs visible in the Routing Table:               33551
Prefixes from 32-bit ASNs in the Routing Table:                  161990
Number of bogon 32-bit ASNs visible in the Routing Table:            14
Special use prefixes present in the Routing Table:                    1
Prefixes being announced from unallocated address space:            527
Number of addresses announced to Internet:                   3064300672
    Equivalent to 182 /8s, 165 /16s and 132 /24s
    Percentage of available address space announced:               82.8
    Percentage of allocated address space announced:               82.8
    Percentage of available address space allocated:              100.0
    Percentage of address space in use by end-sites:               99.6
Total number of prefixes smaller than registry allocations:      310145

APNIC Region Analysis Summary
-----------------------------

Prefixes being announced by APNIC Region ASes:                   238444
    Total APNIC prefixes after maximum aggregation:               67879
    APNIC Deaggregation factor:                                    3.51
Prefixes being announced from the APNIC address blocks:          233482
    Unique aggregates announced from the APNIC address blocks:    96704
APNIC Region origin ASes present in the Internet Routing Table:   13033
    APNIC Prefixes per ASN:                                       17.91
APNIC Region origin ASes announcing only one prefix:               3749
APNIC Region transit ASes present in the Internet Routing Table:   1754
Average APNIC Region AS path length visible:                        4.6
    Max APNIC Region AS path length visible:                         27
Number of APNIC region 32-bit ASNs visible in the Routing Table:   8277
Number of APNIC addresses announced to Internet:              773734912
    Equivalent to 46 /8s, 30 /16s and 66 /24s
APNIC AS Blocks        4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations)  23552-24575, 37888-38911, 45056-46079, 55296-56319,
                       58368-59391, 63488-64098, 64297-64395, 131072-151865
APNIC Address Blocks     1/8,  14/8,  27/8,  36/8,  39/8,  42/8,  43/8,
                        49/8,  58/8,  59/8,  60/8,  61/8, 101/8, 103/8,
                       106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
                       116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
                       123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
                       163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
                       203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
                       222/8, 223/8,

ARIN Region Analysis Summary
----------------------------

Prefixes being announced by ARIN Region ASes:                    266668
    Total ARIN prefixes after maximum aggregation:               121596
    ARIN Deaggregation factor:                                     2.19
Prefixes being announced from the ARIN address blocks:           267868
    Unique aggregates announced from the ARIN address blocks:    128736
ARIN Region origin ASes present in the Internet Routing Table:    19057
    ARIN Prefixes per ASN:                                        14.06
ARIN Region origin ASes announcing only one prefix:                6949
ARIN Region transit ASes present in the Internet Routing Table:    1929
Average ARIN Region AS path length visible:                         3.8
    Max ARIN Region AS path length visible:                          35
Number of ARIN region 32-bit ASNs visible in the Routing Table:    4649
Number of ARIN addresses announced to Internet:              1290070784
    Equivalent to 76 /8s, 228 /16s and 235 /24s
ARIN AS Blocks         1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations)  2138-2584, 2615-2772, 2823-2829, 2880-3153
                       3354-4607, 4865-5119, 5632-6655, 6912-7466
                       7723-8191, 10240-12287, 13312-15359, 16384-17407
                       18432-20479, 21504-23551, 25600-26591,
                       26624-27647, 29696-30719, 31744-33791
                       35840-36863, 39936-40959, 46080-47103
                       53248-55295, 62464-63487, 64198-64296, 393216-401308
ARIN Address Blocks      3/8,   4/8,   6/8,   7/8,   8/8,   9/8,  11/8,
                        12/8,  13/8,  15/8,  16/8,  17/8,  18/8,  19/8,
                        20/8,  21/8,  22/8,  23/8,  24/8,  26/8,  28/8,
                        29/8,  30/8,  32/8,  33/8,  34/8,  35/8,  38/8,
                        40/8,  44/8,  47/8,  48/8,  50/8,  52/8,  53/8,
                        54/8,  55/8,  56/8,  57/8,  63/8,  64/8,  65/8,
                        66/8,  67/8,  68/8,  69/8,  70/8,  71/8,  72/8,
                        73/8,  74/8,  75/8,  76/8,  96/8,  97/8,  98/8,
                        99/8, 100/8, 104/8, 107/8, 108/8, 128/8, 129/8,
                       130/8, 131/8, 132/8, 134/8, 135/8, 136/8, 137/8,
                       138/8, 139/8, 140/8, 142/8, 143/8, 144/8, 146/8,
                       147/8, 148/8, 149/8, 152/8, 155/8, 156/8, 157/8,
                       158/8, 159/8, 160/8, 161/8, 162/8, 164/8, 165/8,
                       166/8, 167/8, 168/8, 169/8, 170/8, 172/8, 173/8,
                       174/8, 184/8, 192/8, 198/8, 199/8, 204/8, 205/8,
                       206/8, 207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
                      

RIPE Region Analysis Summary
----------------------------

Prefixes being announced by RIPE Region ASes:                    261853
    Total RIPE prefixes after maximum aggregation:               120667
    RIPE Deaggregation factor:                                     2.17
Prefixes being announced from the RIPE address blocks:           258723
    Unique aggregates announced from the RIPE address blocks:    154172
RIPE Region origin ASes present in the Internet Routing Table:    28174
    RIPE Prefixes per ASN:                                         9.18
RIPE Region origin ASes announcing only one prefix:               12012
RIPE Region transit ASes present in the Internet Routing Table:    3975
Average RIPE Region AS path length visible:                         4.2
    Max RIPE Region AS path length visible:                          34
Number of RIPE region 32-bit ASNs visible in the Routing Table:   10855
Number of RIPE addresses announced to Internet:               716370304
    Equivalent to 42 /8s, 178 /16s and 241 /24s
RIPE AS Blocks         1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations)  2773-2822, 2830-2879, 3154-3353, 5377-5631
                       6656-6911, 8192-9215, 12288-13311, 15360-16383
                       20480-21503, 24576-25599, 28672-29695
                       30720-31743, 33792-35839, 38912-39935
                       40960-45055, 47104-52223, 56320-58367
                       59392-61439, 61952-62463, 64396-64495
                       196608-213403
RIPE Address Blocks      2/8,   5/8,  25/8,  31/8,  37/8,  46/8,  51/8,
                        62/8,  77/8,  78/8,  79/8,  80/8,  81/8,  82/8,
                        83/8,  84/8,  85/8,  86/8,  87/8,  88/8,  89/8,
                        90/8,  91/8,  92/8,  93/8,  94/8,  95/8, 109/8,
                       141/8, 145/8, 151/8, 176/8, 178/8, 185/8, 188/8,
                       193/8, 194/8, 195/8, 212/8, 213/8, 217/8,

LACNIC Region Analysis Summary
------------------------------

Prefixes being announced by LACNIC Region ASes:                  116487
    Total LACNIC prefixes after maximum aggregation:              28055
    LACNIC Deaggregation factor:                                   4.15
Prefixes being announced from the LACNIC address blocks:         116038
    Unique aggregates announced from the LACNIC address blocks:   48355
LACNIC Region origin ASes present in the Internet Routing Table:  10983
    LACNIC Prefixes per ASN:                                      10.57
LACNIC Region origin ASes announcing only one prefix:              2685
LACNIC Region transit ASes present in the Internet Routing Table:  2246
Average LACNIC Region AS path length visible:                       4.9
    Max LACNIC Region AS path length visible:                        55
Number of LACNIC region 32-bit ASNs visible in the Routing Table:  8746
Number of LACNIC addresses announced to Internet:             175887616
    Equivalent to 10 /8s, 123 /16s and 213 /24s
LACNIC AS Blocks       26592-26623, 27648-28671, 52224-53247,
                       61440-61951, 64099-64197, 262144-273820 + ERX transfers
LACNIC Address Blocks  177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
                       191/8, 200/8, 201/8,

AfriNIC Region Analysis Summary
-------------------------------

Prefixes being announced by AfriNIC Region ASes:                  28543
    Total AfriNIC prefixes after maximum aggregation:              5600
    AfriNIC Deaggregation factor:                                  5.10
Prefixes being announced from the AfriNIC address blocks:         36428
    Unique aggregates announced from the AfriNIC address blocks:  11935
AfriNIC Region origin ASes present in the Internet Routing Table:  1699
    AfriNIC Prefixes per ASN:                                     21.44
AfriNIC Region origin ASes announcing only one prefix:              602
AfriNIC Region transit ASes present in the Internet Routing Table:  325
Average AfriNIC Region AS path length visible:                      5.0
    Max AfriNIC Region AS path length visible:                       31
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 1024
Number of AfriNIC addresses announced to Internet:            107936768
    Equivalent to 6 /8s, 110 /16s and 252 /24s
AfriNIC AS Blocks      36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks  41/8,  45/8, 102/8, 105/8, 154/8, 196/8, 197/8,
                      

APNIC Region per AS prefix count summary
----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  9808        9071       8884      50  CHINAMOBILE-CN China Mobile Communicati
  7545        5928        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726       4192      75  ERX-CERNET-BKB China Education and Rese
  7552        3594       1330      20  VIETEL-AS-AP Viettel Group, VN
  7713        3501       1042      61  TELKOMNET-AS-AP PT Telekomunikasi Indon
 45899        3389       1877      66  VNPT-AS-VN VNPT Corp, VN
  4766        2533      11252     600  KIXS-AS-KR Korea Telecom, KR
  9498        2491        499     237  BBIL-AP BHARTI Airtel Ltd., IN
 24560        2241        851     415  AIRTELBROADBAND-AS-AP Bharti Airtel Ltd
 45090        2179       1438      79  TENCENT-NET-AP Shenzhen Tencent Compute

Complete listing at https://thyme.apnic.net/current/data-ASnet-APNIC

ARIN Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 16509        7419      10586    2886  AMAZON-02, US
 11492        4612        305     508  CABLEONE, US
  7155        3899        265      32  VIASAT-SP-BACKBONE, US
 22773        3771       3065     348  ASN-CXA-ALL-CCI-22773-RDC, US
 16625        3544       1851    2544  AKAMAI-AS, US
  6327        3504       1320      63  SHAW, CA
   749        3027      50696    2294  DNIC-AS-00749, US
  7018        2639      24156    1591  ATT-INTERNET4, US
 30036        2600        367     258  MEDIACOM-ENTERPRISE-BUSINESS, US
396982        2554       3479     346  GOOGLE-CLOUD-PLATFORM, US

Complete listing at https://thyme.apnic.net/current/data-ASnet-ARIN

RIPE Region per AS prefix count summary
---------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 12479        6909       1730     144  UNI2-AS, ES
  9121        6834       1692      17  TTNET, TR
 20940        4111       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA
  8551        3982        374      38  BEZEQ-INTERNATIONAL-AS Bezeqint Interne
 12389        2946       2290     913  ROSTELECOM-AS, RU
  9009        2623        252    1348  M247, RO
  6849        2477        339      20  UKRTELNET, UA
 34984        2243        357     616  TELLCOM-AS, TR
 47331        2076        322    1579  TTNET, TR

Complete listing at https://thyme.apnic.net/current/data-ASnet-RIPE

LACNIC Region per AS prefix count summary
-----------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10744       3314     605  Uninet S.A. de C.V., MX
 10620        3469        510     837  Telmex Colombia S.A., CO
 11830        2301        369      64  Instituto Costarricense de Electricidad
 13999        2075        338     538  Mega Cable, S.A. de C.V., MX
 28573        1337       2330     260  Claro NXT Telecomunicacoes Ltda, BR
  6503        1294        338     520  Axtel, S.A.B. de C.V., MX
  3816        1285        722     152  COLOMBIA TELECOMUNICACIONES S.A. ESP, C
  6147        1089        369      22  Telefonica del Peru S.A.A., PE
 11664        1089        181     466  Techtel LMDS Comunicaciones Interactiva
 26615         986       2466      43  TIM SA, BR

Complete listing at https://thyme.apnic.net/current/data-ASnet-LACNIC

AfriNIC Region per AS prefix count summary
------------------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
 24863        1574        393      21  LINKdotNET-AS, EG
 24835        1518        521      31  RAYA-AS, EG
 36992        1350       1519     270  ETISALAT-MISR, EG
 36903        1260        550      99  MT-MPLS, MA
 29571        1014         68      32  ORANGE-COTE-IVOIRE, CI
 36935         815        520      42  Vodafone-, EG
  6713         612       1863      34  IAM-AS, MA
 15399         526         53      42  WANANCHI-, KE
 37342         486         32       1  MOVITEL, MZ
 23889         400        231      14  MauritiusTelecom, MU

Complete listing at https://thyme.apnic.net/current/data-ASnet-AFRINIC

Global Per AS prefix count summary
----------------------------------

   ASN  No of nets  /20 equiv  MaxAgg  Description
  8151       10744       3314     605  Uninet S.A. de C.V., MX
  9808        9071       8884      50  CHINAMOBILE-CN China Mobile Communicati
 16509        7419      10586    2886  AMAZON-02, US
 12479        6909       1730     144  UNI2-AS, ES
  9121        6834       1692      17  TTNET, TR
  7545        5928        786     694  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726       4192      75  ERX-CERNET-BKB China Education and Rese
 11492        4612        305     508  CABLEONE, US
 20940        4111       3400     182  AKAMAI-ASN1, NL
 39891        4010        234      47  ALJAWWALSTC-AS, SA

Complete listing at https://thyme.apnic.net/current/data-ASnet

Global Per AS Maximum Aggregation summary
-----------------------------------------

   ASN  No of nets  Net Savings  Description
  9808        9071         9021  CHINAMOBILE-CN China Mobile Communications Grou
  9121        6834         6817  TTNET, TR
 12479        6909         6765  UNI2-AS, ES
  7545        5928         5234  TPG-INTERNET-AP TPG Telecom Limited, AU
  4538        4726         4651  ERX-CERNET-BKB China Education and Research Net
 16509        7419         4533  AMAZON-02, US
 11492        4612         4104  CABLEONE, US
 39891        4010         3963  ALJAWWALSTC-AS, SA
  8551        3982         3944  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
 20940        4111         3929  AKAMAI-ASN1, NL

Complete listing at https://thyme.apnic.net/current/data-CIDRnet

List of Unregistered Origin ASNs (Global)
-----------------------------------------

    Bad AS  Designation  Net Originated      Transit AS  Transit AS Name
    398083  UNALLOCATED  5.133.124.0/24          399587  UT, US
     33123  UNALLOCATED  8.10.69.0/24             11168  SCC, US
     16641  UNALLOCATED  8.10.194.0/24             3356  LEVEL3, US
     16641  UNALLOCATED  8.10.210.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.12.76.0/24              3356  LEVEL3, US
     16641  UNALLOCATED  8.12.250.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.14.115.0/24             3356  LEVEL3, US
     25674  UNALLOCATED  8.19.146.0/24             3356  LEVEL3, US
     53775  UNALLOCATED  8.20.88.0/24              7029  WINDSTREAM, US
     62828  UNALLOCATED  8.21.130.0/24             3356  LEVEL3, US

Complete listing at https://thyme.apnic.net/current/data-badAS

Prefixes from the Special Purpose Address Registry (Global)
-----------------------------------------------------------

Prefix                Origin AS  Description
192.88.99.0/24             6939  HURRICANE, US

Complete listing at https://thyme.apnic.net/current/data-spar

Advertised Unallocated Addresses
--------------------------------

Unassigned Network     ASN Information  AS Name
23.136.112.0/24      Origin:     54835  UNASSIGNED
23.136.112.0/24     Transit:     21559  OSNET, PR
23.141.0.0/24        Origin:    395350  UNASSIGNED
23.141.0.0/24       Transit:     11426  TWC-11426-CAROLINAS, US
23.158.240.0/24      Origin:     13465  UNASSIGNED
23.158.240.0/24     Transit:     33185  HIVE-DATA-CENTER, CA
23.181.240.0/24      Origin:    399613  UNASSIGNED
23.181.240.0/24     Transit:     11992  CENTENNIAL-, PR
24.48.128.0/19       Origin:     29866  OPTICALTEL, US
24.48.128.0/19      Transit:      3257  GTT-BACKBONE GTT, US

Complete listing at https://thyme.apnic.net/current/data-add-IANA

Number of prefixes announced per prefix length (Global)
-------------------------------------------------------

 /1:0        /2:0        /3:0        /4:0        /5:0        /6:0       
 /7:0        /8:16       /9:13      /10:39      /11:100     /12:294     
/13:589     /14:1202    /15:2046    /16:13513   /17:8343    /18:13980   
/19:25194   /20:44406   /21:52220   /22:109690  /23:97714   /24:542921  
/25:786     /26:0       /27:0       /28:0       /29:0       /30:0       
/31:0       /32:0       

Advertised prefixes smaller than registry allocations
-----------------------------------------------------

   ASN  No of nets  Total ann.  Description
  9121        5980        6834  TTNET, TR
 12479        5918        6909  UNI2-AS, ES
  8151        4740       10744  Uninet S.A. de C.V., MX
 11492        3519        4612  CABLEONE, US
  8551        3446        3982  BEZEQ-INTERNATIONAL-AS Bezeqint Internet Backbo
  6327        3312        3504  SHAW, CA
 39891        3193        4010  ALJAWWALSTC-AS, SA
  7155        2988        3899  VIASAT-SP-BACKBONE, US
 22773        2782        3771  ASN-CXA-ALL-CCI-22773-RDC, US
  6849        2340        2477  UKRTELNET, UA

Complete listing at https://thyme.apnic.net/current/data-sXXas-nos

Number of /24s announced per /8 block (Global)
----------------------------------------------

   1:1908      2:1029      3:166       4:5         5:3945      6:116    
   7:5         8:1591      9:1        11:173      12:1623     13:347    
  14:2375     15:275      16:69       17:360      18:343      20:241    
  21:4        22:188      23:5967     24:2473     25:6        27:2713   
  29:19       31:2452     32:94       34:7        35:90       36:1867   
  37:4484     38:3650     39:753      40:159      41:3969     42:1181   
  43:2298     44:296      45:16261    46:4225     47:375      49:1719   
  50:1930     51:242      52:1500     54:394      55:838      56:8      
  57:78       58:1791     59:1164     60:994      61:2386     62:2542   
  63:1968     64:5628     65:2327     66:4845     67:2967     68:1377   
  69:4164     70:1303     71:678      72:2998     74:2652     75:1474   
  76:599      77:2249     78:3959     79:3156     80:2051     81:1826   
  82:1527     83:1220     84:1424     85:3744     86:738      87:1914   
  88:2841     89:3438     90:545      91:7599     92:2078     93:2548   
  94:3541     95:4799     96:1345     97:348      98:1171     99:739    
 100:68      101:1064    102:2318    103:30334   104:4544    105:477    
 106:890     107:2543    108:900     109:4333    110:2019    111:3323   
 112:2066    113:1551    114:1525    115:2019    116:1922    117:2482   
 118:2323    119:1853    120:1738    121:1089    122:2555    123:2116   
 124:1553    125:2188    128:1244    129:981     130:972     131:2007   
 132:834     133:379     134:1906    135:290     136:869     137:889    
 138:2528    139:1522    140:1137    141:1475    142:1399    143:1418   
 144:1204    145:349     146:1879    147:1535    148:2253    149:1830   
 150:875     151:1120    152:1823    153:469     154:3795    155:1426   
 156:1638    157:1303    158:1046    159:2185    160:2571    161:1373   
 162:3502    163:1436    164:1678    165:1635    166:812     167:1717   
 168:3825    169:893     170:4545    171:852     172:3457    173:3104   
 174:1034    175:1147    176:3593    177:4746    178:3558    179:2107   
 180:2340    181:3283    182:3234    183:1939    184:2355    185:19837  
 186:4533    187:3956    188:4041    189:3450    190:8996    191:1453   
 192:10982   193:8737    194:7160    195:5062    196:2984    197:2461   
 198:6005    199:6064    200:7616    201:5833    202:10554   203:10061  
 204:4562    205:3477    206:3883    207:3444    208:4095    209:4789   
 210:4338    211:2435    212:4046    213:3561    214:1099    215:53     
 216:6477    217:2624    218:1294    219:571     220:2046    221:924    
 222:826     223:2014   

End of report



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